Machine for making paper tubes.



Patented Sept. 30, |902.v

l H. & la.l L. wHlTE. MACHINE FUR MAKING PAPER TUBES.

(Application led Oct. 23,v 1901.)

s sheets-sheet a.

No Model.)

Patented Sept. 30, |902.

J. H. & E. L. WHITE. MACHINE FOB MAKING PAPER TUBES.

(Application med oen'. 23 1901.)

3 Sheets-Sheet 2.

(Nu Model.)

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Patente'd Sepft. 30, |902. J; H. & E. L. W HITE. f MACHINE FOR MAKING PAPER TUBES.

(Application led Oct. 2S, 1901.)

3 Sheets-Sheet 3.

(No Model.)

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`UNITED STATESN PATENT OFFICE.

JOHN HOIVARD WHITE AND EDWARD LOVRY WHITE, OF ENGLEWOOD, NEW JERSEY.

MACHINE FOR MAKING PAPER TUBES.

SPECIFICATION forming part of Letters Patent No. 710,386, dated September 30, 1902. Application filed October Z3, 1901. Serial No. 79,713. (No model.)

To all whom it may concern: v

Beit known that we, JOHN HOWARD WHITE and EDWARD LOWRY WHlTE, citizens of the United States, formerly residing at Washington city, in the District of Columbia, but now residing at Englewood, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Machines for Making Paper Tubes, of which the following is a specification.

Our present invention more especially relates to and constitutes Vimprovements upon the apparatus illustrated in United States Letters Patent No. 642,656, granted to us jointly February 6, 1900. Some of our improvements may, however, be used without the others and in machines diering in form, construction, and operation from the machine shown in said patent.

Our present improvements relate more especially to the tube forming and feeding devices; and our improvements consist in certain novel combinations and organizations of instrumentalities hereinafter described, and set forth in the claims at the end ofV this specification. y

The accompanying drawings show so much of one form of approved apparatus for carrying out our invention as is necessary to-illustrate the subject-matter claimed.

Unless otherwise specified the different parts of the apparatus are of usual well-known construction. The feed end is hereinafter called the front of the machine and the discharge end the rear.

Figure l is an elevation of one side of the essential parts of the apparatus. The remaininggures are on a larger scale. Fig. 2 is a vertical centrallongitudinal section through the cutting apparatus; Fig. 3, a vertical transverse section therethrough on the line 3 3 of Fig. 2; Fig. 4, a view in elevation showing one side of the feed mechanism; Fig. 5, a view of the clamping devices, partly in vertical cross-section, on the line 5 5 of Fig. 4; Fig. 6, a detail view of one' side of some parts of the clamping devices; Fig. 7, a detail View in perspective of the adjustable former of the paper strip. Figs. 8 and 9 are respectively side and end views showing details of the reciprocating mandrel and paperstrip guide. Fig. l0 is a view in perspective showing the details of the devices for actuating the cutters.

The paper strip a. is shown as passing from a suitably-mounted roll A between a guide-plate b and a paster B, which gums the strip in the usual way, preferably in this instance on the upper side of one edge. The strip then passes through a horizontal slot or at guide c, Fig. 9, in a collar C, mounted on a tubular mandrel C, reciprocating on a supporting-rod D, mounted in standards e e on the frame or bed-plate E. The rear end CZ' of this supporting-rod is made of the fullsize of the bore of the tube, (see Fig. 2,) While that portion d of it forward of the bracket or standard D', through which it passes, is of about one-half of the diameter of said rear portion. The collar C' is mounted on the front end of the tubular mandrel C, to which it is adjustably secured by a clamp-screw c. This tubular mandrel extends backward beyond the feed-clamps. (See Figs. l and 4, which also show it as reciprocated by a link-rod c2,-pivoted to the lower feed-clamp and collar C', respectively. See also Figs. 6, 8, and 9.) The paperstrip apasses from the fiat guide c through a U-shaped formerf', Fig. 7, in acircular blockf', capable of turning axially around the mandrel and supporting-rod in a ring F in a standard F', mounted on the bed-plate or frame E. A clamp-screw f2, passing into the block fand adjustable in a slot f3 in the ring, serves to adjust and hold the former in proper relation to the paper strip and mandrel. This former is somewhat similar totheone shown in our Patent No. 642,656, above mentioned; but it is supported on the standard F independently of the mandrel instead of being mounted directly thereon, as shown in said patent. This construction is, in fact, essential, as the mandrel reciprocates through the former .on the Y supporting-rod, which likewise extends therethrough. From this former the partiallyfolded paper strip passes through a folder G, also mounted on a bracket g on the frame, which folder completes the formation of the tube by wrapping it upon and around the tubular mandrel. The finished tube then passes through a heater H, mounted on the frame IOO and provided with a Bunsen or other burner h, the construction and operation of these devices being substantially similar to that of the corresponding devices in our patent above mentioned. In the heater the tube is given a permanent form. The heat is sufficient to soften the sizing or other material contained in the paper, enabling the tube to receive a definite form and to retain this form after it emerges from the heater. In our prior patent the mandrel was stationary and the tube moved along the mandrel while moving through the heater. In the machine constructed in accordance with our present invention the tube immediately after being folded by the folding devices is carried through the heater by the reciprocating mandrel, so that the tube and mandrel move together through the heater. Thus considerable friction is avoided, and the machine is found to work more efciently by this construction.

The feed mechanism shown consists, essentially, of two clamps I I', t-he adjacent faces of which form semicircular forks t' t', which encircle the reciprocating tubular mandrel or sleeve C, the paper tube passing between the mandrel and clamps. The lower or driven clamp I is shown as provided with a groove i2, traversing a guide-bar I2 on the frame. A stud] on this clamp is traversed bya slotted pitman J, pivoted on the frame and vibrated by a stud 7c on a driving-pulley K, this stud traversing a slot 7o in the pitman. (See Fig. 4.) The lower clamp is thus caused to travel parallel with and in a fixed relation to the mandrel or sleeve. The upper clamp I' likewise travels parallel with the mandrel, but approaches and recedes from it periodically to clamp or release the paper tube, as required. The upper clamp lies between lugs s at opposite ends of the lower clamp and is thus compelled to partake of its reciprocating movement. Arms L L', secured to the opposite sides of the upper clamp at each end, carry stud-pins Z, traversing grooves Z' in a presser-bar M, suspended from standards M' M2 on the frame by ymeans of elbow-levers N N', rocking on pivots n. Friction-rollers Z2, interposed between the upper clamp and its presser-bar and turning in bearings in the lugs L L', serve to relieve strain and diminish friction. The upper ends of the elbow-levers N N' are connected by a link-rod N2, driven by a bell-crank O, actuated by a cam o on the shaft o, as hereinafter more fully explained. The pressure of the upper clamp upon the paper tube is normally regulated by means of a coil-spring n', connecting one of the elbow-levers N and a bracket-arm 'n2 on the standard M2. A set-screw n3 regulates the tension of this spring and limits the pressure of the upper clamp on the paper tube. These clamps feed the uished tube from the traversing tubular mandrel or sleeve C onto or over the enlarged portion d' of the supporting-rod D, which extends clear through and projects beyond the rear end of the machine. I

A tubular sleeve P is mounted at its rear end in a standard or bracket e' on the frame and is capable of turning and moving endwise therein, but is clamped in anydesired relation to the other parts of the machine by a binding-screwp. (See Fig. 2.) A collar Q turns freely on this sleeve, being prevented from moving endwise therein, however, by a suitable stop p'. A suitably-driven drivingpulley R is secured on this collar by a clampscrew fr to rotate vthe cutter. The drawings also show cutter-disks S, mounted on arms S', rocking on pivots s on a ring S2, carried by and turning with the collar Q, above mentioned. away from the mandrel by retracting-springs s' and pressed toward it to sever the finished paper tube by means of a cone T, movable endwiseon the collar Q and acting upon the rocking'arms. (See Fig. 2.) This cone is shifted as required by means of a lever T', Fig. 10, rocking on a pivot t on the frame and actuated by the bell-crank lever O, with which it is connected by a turnbuckle t2 or other well-known adjusting device, which regulates to a nicety the relation of the cone and rocking arms, and consequently the relation of the cutter to the tube. The details of the construction of this cutter may be modified in various well-known ways without departing from the spirit of our invention. For instance, the drawings show disk cutters arranged on opposite sides of the mandrel. These cutters may or may not rotate on their axes as well as around the mandrel. Furthermore, one disk might be omitted, if desired, and theV cutter still do good work. Other well-known forms of cutter besides a disk might be employed, as the entire perimeter of the cutter need not necessarily act upon the paper tube. Such modiications involve no invention, but the mere skill of the workman.

The drawings show a driving-shaft u, carrying a sprocket-wheel U, actuating a similar wheel U2 on a counter-shaft u' by means of a sprocket-chain U'. ApulleyK on the axle to' carries a stud k,.traversing a'slot in the pitman J, actuating the feed-clamps, as hereinbefore explained. A spur-gear V on the' shaft u drives a similar gear V' on a shaft o, carrying a cam o, actuating the upper feedclamp and the cutters through the bell-crank O, as hereinbefore explained. The details of the drivin g-gear may be varied in well-known ways. For instance, the drawings show and describe one set of tube-making devices and gearing for actuating them. Obviously, however, a plurality of such devices may be employed, as shown in our patent above mentioned. The drawings also show one cam only actuating both the feeding and cutting devices; but in practice it would be, perhaps, desirable to actuatethem by separate The cutters are normally drawn lOO IIO

cams, which could easily be done in wellknown ways. The mechanism is of course to be driven from some suitable prime mover.

In starting the machine the paper strip necessarily has first to be drawn by hand through the various guides, which fold it around the mandrel and then through the heater and feed-clamps. The automatic operation of the machine begins with the paper tube grasped between the mandrel and feed-clamps,which carry forward the tube and mandrel until the latter reaches the enlarged end of the supporting-rod. The clamps then release their grasp upon the tube and mandrel and return to the position shown in Fig. 1, the mandrel sliding within the tube and returning with the clamps. The latter then at the proper time renew their grasp upon the paper tube and mandrel and feed them along, the paper strip of course being simultaneously drawn through the tube-forming devices. This forward feed of the clamps moves the finished tube over the mandrel and the enlarged end of the supporting-rod. The feed-clamps and mandrel then return to their normal position. During the pause in the movement of the paper tube thus occasioned the cone advances on the collar Q and forces the cutter against the tube andits supporting-rod, thus severing the tube without crushing it. The cutter retracts out of the way as the feed is resumed until the proper time for its next action. The relation of the cutter and support'can be adjusted to a nicety by means of adjusting devices, such as t2, so as to sever the tube without cutting into the supporting-rod. As the reciprocating mandrel travels with the paper tube during its forward feed, the friction caused by the passage of the latter through the machine is greatly diminished. As the tube while being severed restson the enlarged portion of the supporting-rod, the cutter acts rapidly and effectively without crushing it.

The word folding-guide hereinafter used in the claims is intended to include either or both of the devices hereinbefore called a former or folden We claim as of our own joint invention- 1. A former or guide for partially folding a paper strip comprising a support, a block capable of turning therein, having a foldingguide therein, and an axial perforation therethrough, a mandrel reciprocating through said perforation, and devices for adjusting the block around the mandrel in its support.

2. The combination, substantially as hereinbefore set forth, of a folding-guide, a reciprocating mandrel adapted to carrya partiallyfolded paper strip therethrough, and a supporting-bar on which the mandrel traverses.

3. The combination, substantially as hereinbefore set forth, of a reciprocating mandrel and a paper strip guide attached directly thereto.

4. The combination, substantially as hereinbefore set forth, of a fixed folding-guide, a reciprocating mandrel adapted to carry a partially-folded paper strip therethrough, and a paper-strip guide carried by the mandrel.

5. The combination, substantially as hereinbefore set forth, of a supporting-rod, a mandrel reciprocating thereon,a paper-strip guide carried by the mandrel, and a folding-guide traversed by the mandrel.

6. The combination, substantially as hereinbefore set forth of a reciprocating mandrel, a guide attached directlyr thereto, a fixed former or partial-folding guide and a finishing-folding guide, through which the mandrel carries the paper strip.

7. 'The combination, substantially as hereinbefore set forth, of a reciprocating mandrel, a paper-strip guide attached directly thereto and two folding-guides through which the mandrel carries the paper strip to complete the formation of the tube.

8. The combination, substantially as hereinbefore set forth, of pasting mechanism, a supporting rod, a mandrel reciprocating thereon, and a foldingguide through which the pasted strip is carried by the mandrel.

9. The combination, substantially as hereinbefore set forth, of folding-guides, a mandrel, a heater encircling the mandrel and which softens the paper and sets it in permanent form after the guides have formed it into a tube, a su pporting-rod passing through the guides, mandrel and heater and on which the mandrel slides and means for drawing the mandrel and paper simultaneously and coincidentally through the heater.

10. The combination, substantially as hereinbefore set forth, of-a supporting-rod, a mandrel reciprocating thereon, and reciprocating feed-clamps which carry forward the paper tube and mandrel on the rod.

1l. The combination, substantially as set forth of a reciprocating mandrel, fixed folding-guides which complete the formation of the tube, and reciprocating feed-clamps separate from the folding-guides, which clamps carry forward the finished tube and mandrel.

12. The combination, substantially as hereinbefore set forth, of a supporting-rod, a mandrel reciprocating thereon, foldingguides, and feed-clamps which carry forward the paper tube on the mandrel.

13. The combination, substantially as hereinbefore set forth, of pasting mechanism, a reciprocating mandrel, foldingguides, and feed-clamps separate from the folding-guides, which clamps carry forwardv the pasted tube on the mandrel. l

14. The combination, substantially as hereinbefore set forth, of pasting mechanism, a

supporting-rod, a mandrel reciprocating thereon, folding-guides, and reciprocating feed-clamps which carry forward the pasted tube on the mandrel.

15. Feed clamps, substantially such as hereinbefore set forth, comprising, a` lower member reciprocating in a fixed path, an upper member reciprocating therewith'and movable laterally relatively thereto, a laterally- ICO IIO

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movable presser-bar connected with the upper member, and means for raising and lowering the presser-bar and upper member positively to open and close the clamp.

16. The combination,substantiallyas hereinbefore set forth, of the upper member of the feed clamp, a longitudinally-grooved presser-bar, lugs connected With the upper member traversingthese grooves, rocking levers carrying the presser-bar, a link-rod connecting these levers with actuating mechanism which releases the clamp, a spring which normally closes the clamp, and an adjustingstop regulating the pressure of the clamp.

17. The combination, substantially as hereinbefore set forth, of the lower feed-clamp reciprocating in a fixed path, the upper clamp reciprocating therewith and movable laterally relatively thereto, a supporting-rod, and a mandrel movable thereon by the clamps and carrying the iinished tube.

18. The combination, substantially as hereinbefore set forth, of a supporting-rod, a reciprocating mandrel, means for forming a paper tube around the mandrel, and a cutter revolving around the supportingrod and adapted to sever the tube delivered thereto by the mandrel.

19. The combination, substantially as hereinbefore set forth, of a supporting-rod over which the nished paper tube passes, a cutter revolving around the rod, means for approximating the cutter and rod to sever the tube between them, and devices for adjusting the position of the cutter relatively to the axis of the supporting-rod, so that the tube may be severed Without cutting into the rod.

20. The combination, substantially as hereinbefore set forth, of a reciprocating mandrel, its supporting-rod having au enlarged rear portion, means for forming a tube around the mandrel, devices feeding the mandrel and tube to the enlarged portion of the supporting-rod, and a cutter severing the tube into proper lengths.

ln testimony whereof we have hereunto subscribed our names.

JOHN HOWARD WHITE. EDWARD LOWRY WHITE.

Witnesses:

JOSEPH HENRICI, FRANK HENRICI. 

